RCE in Python Software Foundation Cpython
CVE-2026-4786
Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "webbrowser.open()" API could have commands injected into the underlying shell. See CVE-2026-4519 for…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.000 (6.2th percentile) — read the EPSS interpretation.
Affected products
- Python Software Foundation Cpython — versions 0
Weakness classification (CWE)
References
- cna@python.org (patch)
- cna@python.org (issue-tracking)
- cna@python.org (vendor-advisory)
- cna@python.org (patch)
- cna@python.org (patch)
- cna@python.org (patch)
- cna@python.org (patch)
- cna@python.org (patch)